hydraulic steel tubing
seamless steel tube for hydraulic and pneumatic use.
hydraulic steel tubing
Outer diameter :38mm-325mm
Wall thickness:1.5mm-50mm
Standard:GB/T17396-1998
Material:27SiMn.
Application:Hydraulic support, hydraulic prop
Packing:Caps on two ends ,wrapped with strong steel strip ,or according to the customers'requirements.
Hydraulic Steel Tube
Precision: H8, H9, H10
Processing form: Cold-drawn, Cold-rolled, Hone, SRB
Hydraulic Steel Tube
Seamless steel tube for hydraulic and pneumatic cylinder use
|
Processing mode |
Diameter |
Length |
Linearity |
Precision |
Roughness of inner hole |
|
Cold rolling |
30-100 |
≤12M |
0.3-1.0 |
H8-H10 |
0.4-1.6 |
|
Cold drawn |
30-250 |
≤12M |
H8-H10 |
0.8-1.6 |
|
|
Grinding |
40-500 |
≤12M |
1000 |
H8-H9 |
0.4-0.8 |
|
Rolling |
40-400 |
≤7M |
H8 |
0.4 |
Mechanical performance
|
Model |
Item |
Cold drawn (rolling) tube |
metallic cut pipe |
|
20 |
Intensity of tensionσbN/mm2 |
≥510 |
≥390 |
|
Elongation rate δ5% |
≥5 |
≥20 |
|
|
45 |
Intensity of tension σbN/mm2 |
≥647 |
≥590 |
|
Elongation rateδ5% |
≥4 |
≥4 |
|
|
16Mn |
Intensity of tensionσbN/mm2 |
≥640 |
|
|
Elongation rateδ5% |
≥10 |
|
|
|
27SiMn |
Intensity of tensionσbN/mm2 |
≥840 |
|
|
Elongation rateδ5% |
≥7.5 |
|
Size tolerance
|
Inner diameter |
|
warp of wall thickness |
||
|
H8 |
H9 |
H10 |
||
|
30 |
+0.033 0 |
+0.052 0 |
+0.084 0 |
±5% |
|
30-50 |
+0.039 0 |
+0.062 0 |
+0.100 0 |
|
|
50-80 |
+0.046 0 |
+0.074 0 |
+0.120 0 |
|
|
80-120 |
+0.054 0 |
+0.087 0 |
+0.140 0 |
|
|
120-180 |
+0.063 0 |
+0.100 0 |
+0.160 0 |
|
|
180-250 |
+0.072 0 |
+0.115 0 |
+0.185 0 |
|
|
250-315 |
+0.081 0 |
+0.130 0 |
+0.210 0 |
|
|
315-400 |
+0.089 0 |
+0.140 0 |
+0.230 0 |
|
